All Pre-owned / Used scuba equipment that Scuba.com sells are pre-inspected by our factory trained technicians and are tested to be sure they are working like new. In fact most pre-owned scuba gear have never been in the water and are simply store displays’, demos, open box, or customer returns and usually in like-new condition. In addition Scuba.com 30-day satisfaction guarantee's that at any time during the first 30 days of purchase of any pre-owned scuba equipment from Scuba.com fails to meet your expectations, that product may be returned to Scuba.com and you will receive a store credit for 100% of the purchase price of the product (shipping excluded).